关于不定带词bothalleither either的英语问题

题目

关于不定带词both\all\either\neither的英语问题
1、There are many tall trees on _______side of the street.
A both B all C either D neither
为什么选C?
2、-Do you want an apple or a pear?
-I really don't mind ________.
A both B none C either D neither
为什么选D?
3、The math problem is very difficult.______of the student in
class One can work it out.
A All B Both C None D Neither
为什么选D?

答案

1,either side of the street表示街道的任意一边,即每一边,如果side用复数即：sides是就要用 both表达以上含义
2,neither 是指两者都不的意思,我两者都不介意
3,这个不清楚,我觉得应该是C